CMT 851.501.11 Bowl & Tray Bit, 1/2-Inch Shank, 3/4-Inch Diameter 5/8-Inch Cutting Length, 1/4-Inch Radius, 2-25/64-Inch Overall Length. Rout beautiful raised sign lettering, unique boxes, or lots of other specialty or craft items. The round corner of the bit shapes the inner radius while the sides and bottom create the smooth flat surfaces. 2 Hi-Density carbide-tipped cutting edges for long-lasting performance on wood. Anti-kickback design to work safely.